California Sinus Centers, Atherton, CA, USA.
Int Forum Allergy Rhinol. 2011 Jul-Aug;1(4):313-8. doi: 10.1002/alr.20049. Epub 2011 Apr 28.
An increasing number of patients seeking care by an otolaryngologist are undergoing computed tomography (CT) examinations via in-office CT scanners. Many otolaryngologists and patients are not fully aware of the radiation dosages and the associated risks. A recent study of common CT examinations demonstrated significant variability in radiation dosages for similar studies. Despite the relatively low doses associated with sinus scans, widely publicized studies and events have generated a renewal of physician, public, and regulatory agency awareness and concern regarding medical radiation exposure.
Phantom measurements and/or radiation dosage reports from CT scanners utilized by a large otolaryngology group in California were reviewed and compared. Different types of CT scanners from multiple manufacturers were included.
There was nearly a 10-fold difference (0.15-1.45 mSv) in radiation between scans obtained from in-office, hospital-based, and outpatient imaging facility CT scanners.
Significant relative variability can exist in radiation dosages associated with routine sinus CT scans obtained in different locations. There is a need for increased awareness and understanding among otolaryngologists and their patients regarding medical radiation exposure. All otolaryngologists should constantly consider the principle of "as low as reasonably achievable" (ALARA). Shielding, pediatric protocols, and other dosage reduction measures should be utilized whenever possible.
越来越多寻求耳鼻喉科医生治疗的患者正在通过办公室内的 CT 扫描仪进行计算机断层扫描（CT）检查。许多耳鼻喉科医生和患者并不完全了解辐射剂量和相关风险。最近一项针对常见 CT 检查的研究表明，类似研究的辐射剂量存在显著差异。尽管鼻窦扫描的剂量相对较低，但广泛宣传的研究和事件引起了医生、公众和监管机构对医疗辐射暴露的再次关注和担忧。
回顾和比较了加利福尼亚州一个大型耳鼻喉科小组使用的 CT 扫描仪的体模测量值和/或辐射剂量报告。包括来自多个制造商的不同类型的 CT 扫描仪。
从办公室、医院和门诊影像设施的 CT 扫描仪获得的扫描之间的辐射差异近 10 倍（0.15-1.45mSv）。
在不同位置获得的常规鼻窦 CT 扫描的辐射剂量存在显著的相对差异。耳鼻喉科医生及其患者需要提高对医疗辐射暴露的认识和理解。所有耳鼻喉科医生都应始终考虑“尽可能低”（ALARA）的原则。应尽可能使用屏蔽、儿科方案和其他剂量减少措施。
